题目内容
(请给出正确答案)
[单选题]
Improved consumer confidence is _____________ to an economic recovery.
A.crucial
B.subordinate
C.cumulative
D.satisfactory
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A.crucial
B.subordinate
C.cumulative
D.satisfactory
B.Having improved
C.Improved
D.To improve
B.transportation capacity
C.travel service
D.labor cost
B.improve
C.improved
D.have improved
B.to have improved
C.improving
D.improved
A.CO:N2,CN-,N2O+,CO2:N2O,NO2+,N3-,ClO4-:SO42-,PO43-,SiO44-
B.CO:N2,CN-,NO+,CO2:N2O,NO2+,N3-,ClO4-:SO42-,PO43-,SiO44-
C.CO:N2,CN-,BO+,CO2:N2O,NO2+,N3-,ClO4-:SO42-,PO43-,SiO44-
D.CO:N2,CN-,NO+,CO2:N2O,NO2+,N3-,ClO4-:SO32-,PO43-,SiO44-
A.错误
B.正确